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Re: Simultaneous recording with two digital recorders?

Subject: Re: Simultaneous recording with two digital recorders?
From: "Alberto Carradore"
Date: Fri Jun 8, 2012 8:56 am ((PDT))
Hi to all,
I'm a quite new, silent but very interested member of this goup.
Happy to join it  :)

During my MSc thesis I've tried to localize deer using three SongMeter
They were not pre-synchronizable and the internal clocks were not precise
enough for my purpose, hence I synchronized them emitting a whistle from a
point equidistant from the recorders.
You can download the whole work (in english) with the description at the
following link:
In few days I will add the presentation too.

It is - according to my knowledge - one of the first studies doing that, I
know there is still a lot of work left.
I hope to find the way to go on with it...
Anyway, if you have critics or comments I'd be glad to receive them.

Hope it can be useful
Good job
Alberto Carradore

2012/6/8 Marc Myers <>

> **
> Synchronization is a big topic in audio for video. Each device will have
> some error in their internal clocks and so one can expect them to drift
> relative to one another over time. How much would be an experiment. You
> could certainly add the tracks together in most audio mixing software and
> compare. One could check for the difference ( it will sound like reverb and
> likely won't be that great unless you've been recording for a long period
> of time) by matching the waveform at the beginning and then go to the end
> and measure the difference. Synchronizing them would be a second step.
> I can't verify but it's been reported to me that the audio time-stretching
> utility accurate enough for adjusting long recordings is the TimeWarp
> function in the $19 GoldWave audio editor.

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